A Handy-book of Rock Names, with Brief Descriptions of the Rocks |
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Results 1-5 of 18
Page 5
... beds of tuff . Tuff also on some occasions occurs in dykes and pipes , when , appa- rently , it is the remains of old vents or funnels of eruption . The VOLCANIC rocks appear capable of a division similar to the Plutonic rocks ; the ...
... beds of tuff . Tuff also on some occasions occurs in dykes and pipes , when , appa- rently , it is the remains of old vents or funnels of eruption . The VOLCANIC rocks appear capable of a division similar to the Plutonic rocks ; the ...
Page 66
... beds , which are the result of a process of transmutation , probably of magnesite . " H. MAGNESYTE . - An aggregate of the carbonates of magnesia and iron . It may contain felspar , mica , quartz , chrome , nickel , & c . H. Tuff ...
... beds , which are the result of a process of transmutation , probably of magnesite . " H. MAGNESYTE . - An aggregate of the carbonates of magnesia and iron . It may contain felspar , mica , quartz , chrome , nickel , & c . H. Tuff ...
Page 67
... beds by the action of the waves . " Many rocks thus formed , although not true tuffs , are yet not only undis- tinguishable from them , but in some cases ( except under the microscope ) , are also undistinguishable in aspect and ...
... beds by the action of the waves . " Many rocks thus formed , although not true tuffs , are yet not only undis- tinguishable from them , but in some cases ( except under the microscope ) , are also undistinguishable in aspect and ...
Page 82
... beds or on the lamina- tion and cleavage - planes . B. QUARTZYTE , or QUARTZITE , Quartz - schist . — Chiefly consists of quartz with some mica ; the latter being most conspicuous on the planes of foliation . Varieties in Composition ...
... beds or on the lamina- tion and cleavage - planes . B. QUARTZYTE , or QUARTZITE , Quartz - schist . — Chiefly consists of quartz with some mica ; the latter being most conspicuous on the planes of foliation . Varieties in Composition ...
Page 88
... beds . Varieties are , ―a . Burnt Clay , b . Rock Slag , and c . Porcelanyte . H. MINERALS FORMING ROCKS . a ... beds . j . Magnetite . k . Anthracite . 1. Graphite . Normal graphite is pure carbon with a little oxide of iron ...
... beds . Varieties are , ―a . Burnt Clay , b . Rock Slag , and c . Porcelanyte . H. MINERALS FORMING ROCKS . a ... beds . j . Magnetite . k . Anthracite . 1. Graphite . Normal graphite is pure carbon with a little oxide of iron ...
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A Handy Book of Rock Names: With Brief Descriptions of the Rocks (1873) G. Henry Kinahan No preview available - 2008 |
Common terms and phrases
aggregate of quartz amphibole Amygdaloidal appear Arenaceous Argillous Augyte basic beds Bituminous Breccia Calcareous called Carbonaceous Chloritic classed clay coal colour compact Concretionary conglomerate Conglomeritic constituents containing Cotta crystalline crystals Cupriferous deposited Derivate rocks Diabase Dioryte Dolomitic drift dykes earth elvanyte Euryte felsitic felspar felspathic felstone Ferruginous Fibrous fissile foliation formed gneiss Gneissoid gneissyte granite granitoid granityte granular grit Group Hematitic Hornblendic igneous rocks ingenite rocks intrusive granite Ireland Jukes labradorite lamination latter layers less Lignyte limestone marcasite marl mass matrix metamorphic metamorphosed mica Micaceous minerals Nodular occur oligoclase oligoclase granite Ophyte orthoclase passage-rock Plutonic rocks Porphyritic Protogene pyrite pyroxene quartz Quartzose quartzyte reddish Ribaned ripidolite sand sandstone schist schistose sedimentary rocks shale siliceous slate slaty sometimes Spheroidal Steatyte Structural Varieties Subgroup Subvar Subvarieties surface Syenyte talc Talcose texture Trachyte tuff Tuffose turf usually Varieties in Composition veins of segregation Vesicular Volcanic weather Whinstone